Flanging-machine



(No Model.) I

E. EINPELDT.

I FLANGING MACHINE. No. 592,767. Patented Nov. 2, 1897.

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INVENTOH iux 647M:

ATTORN UNITED STATES PATENT @FFIQE.

EMIL EINFELDT, OF DAVENPORT, IOWA, ASSIGNOR TO THE BETTENDORF METALWHEEL COMPANY, or IowA;

FLANGING- -IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 592,767, dated November2, 1897.

Application filed April 17, 1897- Serial No. 632,581. (No model.)

To ctZZ whom it may concern.-

Be it known that I, EMIL EINFELDT, of Davenport, county of Scott, andState of Iowa, have invented a new and useful Improvement inFlanging-Machines, of which the following is a specification.

This invention has reference to an improved flanging-machine, andrelates more particu-- larly to a machine for forming right-angularflanges on strips or sheets to be employed for wheel-tires or for otherpurposes.

The invention consists of the peculiar combination and arrangement ofdriving and bending devices more particularly described hereinafter, andset forth in the claims.

The invention also consists in the details of construction andcombination of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of aflanging-machine constructed in accordance with my invention. Fig. 2 isa front elevation of the same. Fig. 3 is a side elevation of a modifiedform of the apparatus. Fig. 4 is an end view of a metal strip, showingthe form of the flanges. Fig. 5 is a plan view of the same, having theflanges started at one end preparatory to being operated on by theflanging-machine.

Referring to the drawings, 1 represents a frame of any suitable form andmaterial, adapted to give support to the operative parts of the machine.In this frame are journaled in suitable bearings two horizontal shafts 2and 3, arranged one above the other and provided near one end withintermeshing pinions 4 and 5. Near their opposite ends the shafts havefixed to them driving-rolls 6 and 7, adapted to receive between them thesheet or strip to be flanged and arranged to draw the same as the rollsare revolved in the direction indicated by the arrow in Fig. 1 betweenthe flanging devices hereinafter described. In front of the rolls arefirmly fixed two guiding devices 8 and 9, one above the other, in suchposition that as the strip is fed by the driving-roll it will passbetween the guiding devices and be prevented from buckling or bendingwhile being acted on by the flanging devices. As shown at Fig. 1, theguiding devices are in the form of two plates spaced apart to correspondwith the thickness of the metal sheet to be flanged, so that the latterwill pass snugly between them. As shown at'Fig. 3, the guiding devicesmay be in the form of horizontal guide-rolls spaced apart the properdistance to receive the sheet between them.

At. each side of the guiding devices are j ournaled two verticalflanging-rollers 10 and 11, having inclined peripheral surfaces andadapted as the sheet is passed between them to gradually turn up itsedges to form flanges thereon. These rolls differ as to the inclinationof their surfaces from a vertical line, the surfaces of the rollers 10being formed with a greater inclination than those of the other rollers.The purpose of this is to subject the edges of the sheet to a gradualbending action, sothatafter passing through the rolls 11 theflanges willbe nearly vertical. At opposite sides of the driving-rolls I journal inthe frame Vertical cylindrical finishing-rollers 12, having theirperipheral surfaces arranged vertically. These rollers in acting on theflanges formed by the inclined flangingrollers will bend them to a trulyvertical position and complete the flanging operation.

In proceeding to flange sheets by this apparatus I first start theflanges at one end of the strip by bending up its edges by any suitablemeans to a vertical position, as shown in Fig. 5. This bent end of thestrip is then passed between the guiding devices and pushed between thedriving-rollers to aposition where they will secure a grip on the sheet.The latter being revolved by power applied, preferably, to one of theshafts, the strip willbe drawn forward, its edges passing successivelybetween the flanging-rollers 10 and 11 and between the finishing-rollers12, by which the edges of the strip will be gradually turned upward froma horizontal to a vertical position, thereby forming verticalright-angular flanges thereon, as shown in Fig. i. In cases where theflanged plate or strip is to be used for Wheel-tires it may be bent intocircular form by a separate operation and in any suitable manner; but toeffect this I preferably combine with the flanging devices describedbending devices to act on the flanged strip to bend it' into a circularform. As shown in the drawings, these bending devices are in the form oftwo rollers 13 and 14, arranged one a slight distance above the other,according to the size of the tire, beyond the drivingrollers in suchposition that the flanged strip being pushed over these rollers will bebent or curved upward into substantially circular form.

Having thus described my invention, what I claim is 1. In aHanging-machine, the combination with the frame, of a single pair ofdrivingrolls mounted therein and adapted to draw the sheet between them,upper and lower guides at the entrance of the rolls adapted to sustainthe sheet throughout its width and expose its edges, flanged rollersmounted in the frame at the side of the guides on vertical axes, andfinishing-rollers mounted in the frame at the side of the driving-rollson vertical axes.

2. In a Hanging-machine the combination with the frame, of a single pairof drivingrolls mounted therein and adapted to draw the sheet betweenthem, upper and lower guides at the entrance of the rolls adapted tosustain the sheet throughout its width and expose its edges, flangingdevices at the side of the guides, finishing devices at the sides of therollers, and bending devices at the exit of the rolls by which theflanged sheet is bent into circular form.

In a hanging-machine the combination with the frame, of the twohorizontal drivingrolls adapted to draw the sheet between them, upperand lower horizontal guiding devices at the entrance of the rollsadapted to sustain the sheet through its width and expose its edges,hanging-rollers mounted in the frame on opposite sides of the guidingdevices on vertical axes, finishing-rollers mounted in the frame onopposite sides of the driving-rolls on vertical axes, and horizontalbending-rollers at the exit of the driving-rolls in position to beencountered by the flanged sheet as it issues from the rolls; wherebythe flanged sheet will be bent by the bending-rollers into circularform.

In testimony whereof I hereunto set my hand, this 10th day of April,1807, in the presence of two attesting witnesses.

- EMIL EINFELDT. \Vitnesses:

NATHL. FRENCH, MAY L. DODGE.

